小麥持久抗條銹品種的抗病特點(diǎn)及生化特性研究.pdf

1、甘肅農(nóng)業(yè)大學(xué)碩士學(xué)位論文小麥持久抗條銹品種的抗病特點(diǎn)及生化特性研究姓名：張瑩花申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：作物遺傳育種指導(dǎo)教師：尚勛武20050601Summary10representativecultivarswereselectedasstudyobjectinQingshuicountyLougnandistrictwhichisregardasthestriperustaberrance州mhighfrequencyInorder

2、forproductionpracticeandtheoreticsstudythedynamicofdiseaseeatandflowinwheatadultplantstageisexploredinadultplantstagewithmixedstriperustfungusAndtherelationbetweenresistanceandactivityofcorrelativeenzymeisstudiedAtthesam

3、etime，NStrampelli’SheredityaboutresistancetostriperustisresearchedTheresultsuchasfollows：1TwoyearsresultindicatethatNStrampelli，LibellulaandWudubaijianbelongtodurablestriperustresistancecultivarsNStrampelliandWudubaijian

4、arechiefyimmunetostriperustLibellalahasthechmacteristicofslowstriperustXiannongNo4andQingnongNo3areenduredtostriperustLantianNo1hashightemperature，adult—plant(HTAP)resistanceFu63，QingnongNo1andTianxuanNo15areconsideredto

5、haverace—specificresistanceButtheyaresusceptibletostriperustbecauseofappearanceofnewrustfungus2Afterinoculation，everyconstitutionfactorofyieldisaffectedindifferentextentTheeffecttofloretnumberisthebiggestandtheunfructifi

6、cationfloretnumberhigher3268％thancheckSeedweightandseednumberofspikedecreased1919％and994％respectivelyLengthofspikeisshorter886％1000kernelsweightislighter547％spikeletnumberisless621％respectivelythancheck3TheresistanceofNS

7、trarnpellitostriperustiscontrolledbythecomplementaryactionoftwodominantgenesNStrarnpelliisiso—immunetostripeinadultstageandNStrampelliCanbeoneofimportantdurableresistancesourcetostriperustLeaftipnecrosisCan’tberegardedas

8、thecharacteristicofdurableresistancecultivars4Afterinoculation，theactivityofenzymeinleafofnosporechangedandisrelatedtoadultstageresistanceAmongenzymeofPAL，POD，PPOandCAT，activityofPALandPODincreaseddistinctlyafterinoculat

9、ion，ActivityofPALandPODaboutslowstripeincreasedandhavenoenzymeactivityapex，whiletherestofcultivarshaveenzymeactivityapexTheincreasingofcorrelationalenzymeactivitypreventtheexpandingofpathogeninsomedegreeAndtheresistancet